Oxidation of alkyl-aromatic compounds
AssigneeThe Queen's University of Belfast
InventorsMartyn John Earle, Suhas Prabhakar Katdare
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Abstract
A process for the oxidation of an alkyl-aromatic compound, wherein the aromatic compound is admixed with an oxidising agent or sulfur compound in the presence of an ionic liquid is described. In this process, air, dioxygen, peroxide, superoxide, any other form of active oxygen, nitrite, nitrate, nitric acid or other oxides (or oxyhalides) of nitrogen (hydrate or anhydrous) are preferably used as the oxidising agent. The process is usually under Bronsted acidic conditions. The product of the oxidation reaction is preferably a carboxylic acid or ketone or an intermediate compound in the oxidation such as an aldehyde, or alcohol. The oxidation is preferably performed in an ionic liquid containing an acid promoter such as methanesulfonic acid.
Claims27
A process for the oxidation of an alkyl-aromatic compound comprising admixing the aromatic compound with an oxidising agent or sulfur compound in the presence of an ionic liquid and a nitrogen oxyacid species, wherein the process proceeds at a temperature of0 to 250° C., said ionic liquid comprising an organic anion selected from the group consisting of trifluoroacetate, acetate, methanesulfonate, and combinations thereof 1 or an anion based on sulfur, nitrogen, phosphorous, silicon, selenium, tellurium, arsenic, antimony, bismuth, or oxoanions of a metal.
Dependencies are inferred from the claim text.